Cephalanthus occidentalis

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Cephalanthus occidentalis
Cephalanthus occidentalis occidentalis1.jpg
Cephalanthus occidentalis var. occidentalis blooming in Point Pelee National Park (Ontario, Canada).
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Genus: Cephalanthus
Species:
C. occidentalis
Binomial name
Cephalanthus occidentalis
L., 1753 [2]
Varieties

C. o. var. californicus
C. o. var. occidentalis

Cephalanthus occidentalis range map 1.png
Natural range of Cephalanthus occidentalis [3]

Cephalanthus occidentalis is a species of flowering plant in the family Rubiaceae that is native to eastern and southern North America. Common names include buttonbush, common buttonbush, button-willow, buck brush, and honey-bells.

Contents

Description

Cephalanthus occidentalis is a deciduous shrub or small tree that averages 1–3 m (3.3–9.8 ft) in height, but can reach 6 m (20 ft). The leaves are opposite or in whorls of three, elliptic to ovate, 7–18 cm (2.8–7.1 in) long and 4–10 cm (1.6–3.9 in) broad, with a smooth edge and a short petiole. The flowers are arranged in a dense spherical inflorescence 2–3.5 cm (0.79–1.38 in) in diameter on a short peduncle. Each flower has a fused white to pale yellow four-lobed corolla forming a long slender tube connecting to the sepals. The stigma protrudes slightly from the corolla. The fruit is a spherical cluster of achenes (nutlets). [4]

Taxonomy

There are two varieties, not considered distinct by all authorities:

Habitat

Buttonbush is a common shrub of many wetland habitats in its range, including swamps, floodplains, mangrove, pocosin, riparian zones, and moist forest understory. [5] It is a member of the flora in the Everglades. [5]

Ecology

Waterfowl and other birds eat the seeds. Wood ducks utilize the plant as nest protection, and mallards eat the fruit. [6] Deer browse the foliage, which is poisonous to livestock. [7] Insects and hummingbirds take the nectar, with bees using it to make honey. [5] [8] It is a larval host to the hydrangea sphinx, the royal walnut moth, and the titan sphinx. [9]

Distribution

The species occurs in eastern North America with disjunct populations occurring in the west. In Canada, it occurs from southern Ontario and Quebec east to New Brunswick and south-western Nova Scotia. Besides the eastern United States, and eastern regions of the Midwest, notable areas range into Arizona, the Mogollon Rim, and other mountain ranges; in California, the entire San Joaquin Valley [10] West of the Great Plains and the Rocky Mountains, only western Texas, Arizona, and California find C. occidentalis.

Uses

Medicinal

Cephalanthus occidentalis has a number of historical medicinal uses, but it is also toxic due to the presence of cephalanthin. [5] [8]

Cultivation

Buttonbush is cultivated as an ornamental plant for a nectar source or 'honey plant' and for aesthetics in gardens and native plant landscapes, and is planted on slopes to help control erosion. [11] Buttonbush is a suitable shrub for butterfly gardens.

San Joaquin Valley landmark tree

The town of Buttonwillow, California was named for the buttonbush (Cephalanthus occidentalis). A lone buttonbush served as a landmark on an old trans-San Joaquin Valley trail, and was used by ancient Yokuts as a meeting place. It later became the site of settlers' stock rodeos. This buttonbush tree is listed as California Historical Landmark No. 492, and is now known as the "Buttonwillow Tree". [12]

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<i>Purshia tridentata</i> Species of shrub

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Buttonbush is a common name for several plants and may refer to:

<i>Cephalanthus</i> Genus of flowering plants

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<i>Prunus subcordata</i> Species of tree

Prunus subcordata, known by the common names Klamath plum, Oregon plum, Pacific plum and Sierra plum, is a member of the genus Prunus, native to the western United States, especially California and Oregon.

<i>Baccharis halimifolia</i> Species of flowering plant in the daisy family Asteraceae

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<i>Cercocarpus betuloides</i> Species of tree

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<i>Chrysothamnus viscidiflorus</i> Species of flowering plant

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<i>Encelia actoni</i> Species of flowering plant

Encelia actoni, also known by the common names Acton brittlebush and Acton encelia, is a species of flowering plant in the family Asteraceae.

Cephalanthus salicifolius is a species of flowering plant in the family Rubiaceae. Common names include Mexican buttonbush, mimbre, botoncillo, and Jazmin blanco. Its native range extends from the banks of the southernmost stretch of the Rio Grande in Cameron and Hidalgo Counties of Texas through much of Mexico from Coahuila to Oaxaca; a disjunct population exists in Honduras.

<i>Celtis reticulata</i> Species of tree

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<i>Scrophularia lanceolata</i> Species of flowering plant

Scrophularia lanceolata is a species of flowering plant in the figwort family known by the common names lanceleaf figwort and American figwort. It is native to North America, where it is known from western and eastern Canada and much of the United States except for the southeastern quadrant. Past common names include Western figwort when the western US plants were grouped under the name Scrophularia occidentalis and the eastern US plants were called Scrophularia leporella with the common name hare figwort.

C. occidentalis may refer to:

<i>Ericameria parryi</i> Species of flowering plant

Ericameria parryi is a species of flowering plant in the family Asteraceae known by the common name Parry's rabbitbrush. It is native to much of the western United States.

References

  1. Maiz-Tome, L. (2016). "Cephalanthus occidentalis". IUCN Red List of Threatened Species . 2016: e.T64310261A67729125. doi: 10.2305/IUCN.UK.2016-1.RLTS.T64310261A67729125.en . Retrieved 6 May 2020.
  2. "Cephalanthus occidentalis". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved 2010-01-04.
  3. "Cephalanthus occidentalis" (PDF). Digital Representations of Tree Species Range Maps from "Atlas of United States Trees" by Elbert L. Little, Jr. (and other publications). United States Geological Survey.
  4. "Cephalanthus occidentalis L. buttonbush" (PDF). Wildland Shrubs of the United States and its Territories: Thamnic Descriptions. United States Forest Service. Archived from the original (PDF) on 26 March 2009. Retrieved 2009-09-14.
  5. 1 2 3 4 "Cephalanthus occidentalis". Fire Effects Information System. United States Forest Service.
  6. Niering, William A.; Olmstead, Nancy C. (1985) [1979]. The Audubon Society Field Guide to North American Wildflowers, Eastern Region. Knopf. p. 764. ISBN   0-394-50432-1.
  7. Little, Elbert L. (1980). The Audubon Society Field Guide to North American Trees: Eastern Region. New York: Knopf. p. 667. ISBN   0-394-50760-6.
  8. 1 2 "Common Buttonbush Cephalanthus occidentalis L." (PDF). Natural Resources Conservation Service Plant Guide. United States Department of Agriculture.
  9. The Xerces Society (2016), Gardening for Butterflies: How You Can Attract and Protect Beautiful, Beneficial Insects, Timber Press.
  10. Little Jr., Elbert L. (1976). "Map 34, Cephalanthus occidentalis". Atlas of United States Trees. Vol. 3 (Minor Western Hardwoods). US Government Printing Office. LCCN   79-653298. OCLC   4053799.
  11. O'Sullivan, Penelope (2007). The Homeowner's Complete Tree & Shrub Handbook: The Essential Guide to Choosing, Planting, and Maintaining Perfect Landscape Plants. Storey Publishing. p. 197. ISBN   978-1-58017-571-5.
  12. "CHL # 492 Buttonwillow Tree Kern". www.californiahistoricallandmarks.com.